Malek Ayoub, MD
Gastroenterology Physician · Chicago, IL
Malek Ayoub, MD is a gastroenterology physician with a practice address in Chicago, Illinois, and NPI 1609510981, issued on Apr 23, 2022. Check the license (Illinois 036.173747, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Malek Ayoub
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 036.173747 IL
2022019854 MO
Self-reported in NPPES; status is on the state search - Practice location
- 5841 S Maryland Ave # MC4076, Chicago, IL 60637
- Phone
- (773) 795-1824
- Enumerated
- Apr 23, 2022
- Record last updated
- May 17, 2025
- Fax
- (773) 702-2182
- Entity
- Type 1 · individual
Also registered at 5841 S Maryland Ave # MC4076
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shintaro Akiyama, MDGastroenterology Physician1386106300
- Dennis Chen, MDGastroenterology Physician1467715235
- Tenzin Choden, M.D.Gastroenterology Physician1609261296
- Nathaniel Cohen, MDGastroenterology Physician1023624988
- Alvin George, MDGastroenterology Physician1023633138
- Ophir Gilad, MDGastroenterology Physician1114715596
Verify Malek Ayoub in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.173747Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
About as many Medicare Part D claims as the average gastroenterology physician in 2024
809 Medicare Part D claims for 88 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Albuterol Sulfate Hfa53 claims
- Amlodipine Besylate53 claims
- Atorvastatin Calcium31 claims
- Losartan Potassium29 claims
- Finasteride25 claims
- Pantoprazole Sodium24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Gastroenterology Physician providers in Illinois
There are 887 gastroenterology physician records in Illinois.
Other gastroenterology physician records in Illinois
- Abdul Aadam, M.D.Chicago, IL1013038744
- Richard Aaronson, M.D.Olympia Fields, IL1578520656
- Abdelhai Abdelqader, MDMaywood, IL1073931127
- Mustafa Abdul-Hussein, MDMattoon, IL1972759173
- Abdullah AbdussalamDes Plaines, IL1932442613
- Ayokunle Abegunde, M.D.Maywood, IL1194031435
- Majd Aboona, MDChicago, IL1386347789
- James Abraham, MDNaperville, IL1427276732
- Rana Abraham, M.D., M.S.Chicago, IL1437318516
- Frida Abrahamian, MDChicago, IL1447274279
Common questions
What is Malek Ayoub, MD's NPI number?
Malek Ayoub, MD's National Provider Identifier (NPI) is 1609510981, issued on Apr 23, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Malek Ayoub, MD located?
The NPPES record lists a practice address at 5841 S Maryland Ave # MC4076, Chicago, IL, 60637. Phone: (773) 795-1824. Providers update this record themselves, so call before visiting.
How can I verify Malek Ayoub, MD's license?
NPPES lists Illinois license number 036.173747, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Malek Ayoub, MD prescribe under Medicare Part D?
In 2024, Malek Ayoub, MD had 809 Medicare Part D claims for 88 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.